Published by Parker Brothers 1992. for 2-4 players, age 8 and up. Also possible to play with partnerships. There is at least one really old edition published by Miltron Bradley Company. An abstract card game a deck of cards numbered 1 to 60, four card racks and one card tray. The object is to be first to score 500 points in several rounds of play. Each round, you replace the cards in your rack so their numbers read in any numerical progression from a low number at the front to a high number at the back.